[libc][stdlib][c23] implementations of free_sized / free_aligned_sized

[nickdesaulniers]

Looks like C23 added two new free functions. I didn't get any hits in scudo for similarly named functions; wondering if scudo has equivalents already or a plan to add those?

cc @Sh0g0-1758

[llvmbot]

@llvm/issue-subscribers-libc

Author: Nick Desaulniers (nickdesaulniers)

Looks like C23 added two new free functions. I didn't get any hits in scudo for similarly named functions; wondering if scudo has equivalents already or a plan to add those?

cc @Sh0g0-1758